bomber, 19-year-old dzhokhar tsarnaev. a federal judge has deemed him alert, mentally compensate and lucid despite still being hospitalized. from his hospital bed he told interrogators, he and his brother were not in contact with overseas terrorists. that they conceived the attack on their own following online bomb instructions and were motivated by a radical version of islam. and their anger over the u.s.-led wars in iraq and afghanistan. officials say his older brother tamerlan spent time on jihadist websites reading extremist propaganda including inspire magazine, which is aimed at aspiring lone wolf terrorists. the last fatal victim, m.i.t. officer sean collier was laid to rest today in massachusetts. his casket watched over by a police honor guard. the mourners were led by collier's parents and five siblings. vice president joe biden will attend a public memorial tomorrow. 8-year-old martin richard was also laid to rest this morning in a private funeral. a public memorial is also being planned. as for the survivors, amazingly, only one victim is still in critical condition.